1112321221 has 16 divisors (see below), whose sum is σ = 1239164928. Its totient is φ = 989971200.

The previous prime is 1112321219. The next prime is 1112321233. The reversal of 1112321221 is 1221232111.

It is a cyclic number.

It is not a de Polignac number, because 1112321221 - 2¹ = 1112321219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112321195 and 1112321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112321251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104956 + ... + 115066.

It is an arithmetic number, because the mean of its divisors is an integer number (77447808).

Almost surely, 2^1112321221 is an apocalyptic number.

1112321221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112321221 is a deficient number, since it is larger than the sum of its proper divisors (126843707).

1112321221 is a wasteful number, since it uses less digits than its factorization.

1112321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332.

The product of its digits is 48, while the sum is 16.

The square root of 1112321221 is about 33351.4800421211. The cubic root of 1112321221 is about 1036.1200415083.

Adding to 1112321221 its reverse (1221232111), we get a palindrome (2333553332).

The spelling of 1112321221 in words is "one billion, one hundred twelve million, three hundred twenty-one thousand, two hundred twenty-one".